103T: damp despite Dutch, English, French damp proofing
Chimneys are made from single bricks. Therefore there will be heat loss when fireplaces are opened, increasing the risk of condensation.
chimney
103H: Chimney, roof leak and poor ventilation
Two damp issues; (1) rain from chimney, flaunching, roof leak (2) vapour, mould, condensation from: extractor fan (fixed) kitchen & fish tank